Lens for medical device and manufacturing method thereof

Abstract

Provided is a lens for a medical device. The lens includes a microstructural layer on a surface of the lens, and a coating layer on the microstructural layer. The coating layer is made of a self-assembled monolayer (SAM). Also provided is a method of manufacturing a lens for a medical device. The method includes forming a microstructural layer on a surface of the lens; and forming a coating layer on the surface on which the microstructure is formed. The coating layer is made of a self-assembled monolayer (SAM).

What is claimed is: 
     
         1 . A lens for a medical device, the lens comprising:
 a microstructural layer on a surface of the lens; and   a coating layer on the microstructural layer,   wherein the coating layer is made of a self-assembled monolayer (SAM).   
     
     
         2 . The lens of  claim 1 , wherein the coating layer comprises at least one selected from (heptadecafluoro-1,1,2,2,-tetrahydrodecyl)trichlorosilane (FDTS), trichloro(1H,1H,2H,2H-perfluorooctyl)silane (PFOTS), triethoxy(1H,1H,2H,2H-perfluoro-1-octyl)silane (POTS), and 1H,1H,2H,2H-perfluorodecyltrichlorosilane (FDDTS). 
     
     
         3 . The lens of  claim 1 , further comprising a lubricant layer on the coating layer. 
     
     
         4 . The lens of  claim 3 , wherein the lubricant layer comprises fluorinated synthetic oil or silicone oil. 
     
     
         5 . The lens of  claim 4 , wherein the fluorinated synthetic oil comprises perfluoropolyether (PFPE) or perfluorodecalin (PFD). 
     
     
         6 . The lens of  claim 4 , wherein the lubricant layer has a refractive index of 1.3 to 1.7. 
     
     
         7 . The lens of  claim 1 , wherein the microstructural layer comprises fine protrusions each having a size of 0.5 μm to 0.8 μm. 
     
     
         8 . The lens of  claim 1 , wherein the microstructural layer comprises fine protrusions each having a size of 90 nm to 175 nm. 
     
     
         9 . A method of manufacturing a lens for a medical device, the method comprising:
 forming a microstructural layer on a surface of the lens; and   forming a coating layer on the surface on which the microstructure is formed,   wherein the coating layer is formed of a self-assembled monolayer (SAM).   
     
     
         10 . The method of  claim 8 , wherein the forming of the microstructural layer comprises at least one process selected from emitting a laser beam or electron beam to the surface of the lens, chemically etching the surface of the lens, and injecting-molding using a mold having a microstructure formed on the surface. 
     
     
         11 . The method of  claim 9 , wherein the microstructure formed on the surface of the mold is formed by a laser beam. 
     
     
         12 . The method of  claim 9 , wherein the forming of the microstructural layer is performed by forming a pattern comprising fine protrusions by emitting a laser beam to the surface of the lens. 
     
     
         13 . The method of  claim 12 , wherein the pattern is formed by adjusting a transverse pulse overlap rate and a longitudinal pulse overlap rate of the laser beam. 
     
     
         14 . The method of  claim 13 , wherein the sizes of the fine protrusions are adjusted within the range of 0.5 μm to 0.8 μm by controlling the transverse pulse overlap rate to be equal to or more than 0% and equal to or less than 50% and the longitudinal pulse overlap rate to be equal to or more than 50% and equal to or less than 75%. 
     
     
         15 . The method of  claim 13 , wherein the sizes of the fine protrusions are adjusted within the range of 90 nm to 175 nm by controlling the transverse pulse overlap rate to be more than 50% and less than 99.9% and the longitudinal pulse overlap rate to be more than 75% and less than 99.9%. 
     
     
         16 . The method of  claim 9 , wherein the SAM comprises at least one selected from (heptadecafluoro-1,1,2,2,-tetrahydrodecyl)trichlorosilane (FDTS), trichloro(1H,1H,2H,2H-perfluorooctyl)silane (PFOTS), triethoxy(1H,1H,2H,2H-perfluoro-1-octyl)silane (POTS), and 1H,1H,2H,2H-perfluorodecyltrichlorosilane (FDDTS). 
     
     
         17 . The method of  claim 9 , further comprising applying a lubricant on the surface of the lens on which) the coating layer is formed after the forming of the coating layer. 
     
     
         18 . The method of  claim 17 , wherein the lubricant comprises fluorinated synthetic oil or silicone oil. 
     
     
         19 . A method of increasing transmittance of a lens for a medical device, the lens comprising a microstructural layer formed on a surface and a coating layer formed on the microstructural layer as a self-assembled monolayer (SAM), the method comprising:
 applying a lubricant having a refractive index corresponding to 80% to 120% of a refractive index of the lens to the coating layer.